Improvement in combined tar-burners for gas-retorts



LFINDLAY. COMBINED TAR-BURNER FOR GAS-REIORTS, &c.

No. 183,45Z. 4 Patented Oct.17, 1876.

l I I N.PETER5. PHOTO-LITHOGRAPHER, WASHINGTON D C.

UNITED STlvrns PATENT Grrrcn JonN FINDLAY, or OGDENSBURG, NEW YORK.

IMPROVEMENT IN COMBlN ED TAR-BURNERS FOR GAS-R'VETORTS, &c.

Specification forming part of Letters Patent No. 183,452, dated October 17, 1876; application filed August 25, 1876. a

To all whom it may concern:

My invention relates tothatclass of 'tar-. burners for gas-retorts in which the. dischargepipe through which, thetaris conveyed from the vhydraulic main to the furnace is surrounded with a water compartment, and in v 7 preferably cylindrical in shape,,and with. closed connection with which discharge-pipe a steam orair spray is used to atoniize the tar on its delivery to the furnace; and my invention consists, first, in a water compartment, provided with an induction and eduction tube, arranged toproject intothe. furnace, andhaving passing longitudinally through it, at. a

downward incline from its outer to itsfurnace end, a pipe for the. conveyance from the hydraulic main to the furnace of the tar, and.

maintain a constant and even flow, while at.

the same time it will be prevented by the water from becoming coked upon or in the pipe, and whereby the air or draft passing through the underlying flue, whether assisted or increased in force by a steam-jet or not, will meet the flow of tar as it comes from the furnace end of the discharge-pipe, and throw it in a spray into the furnace.

My invention consists, second, in the combination, with the said water-compartment and its contained tar-discharge pipe and air-flue, of a coil or section of pipe connected with the eduction-tube of the said compartment,,and arranged in one of the furnace-fines, whereby the water supplied to said compartment through its induction-tube and therein heated, and passed out through the eduction-tube, is made to become superheated steam, and may in that form be utilized to form or operate a jet to be played into and through the beforementioned air-flue, and also to drive or operate an exhaust for the retorts, thus obviating Be it known that 1, JOHN FINDLAY, of Og-i densburg, St. Lawrence county, in the State of New York, have invented an Improved the necessity of employing detached or additional steam-generators, or .operating a blower .or fan for these purposes.

Figure 1 is a frontv elevation of the devices embodying my-in'vention, showing the same as they would appear upon the front ofa gas retort or furnace. Fig. 2 is a side elevation of the same, showing the projection of the parts into the furnace, and Fig. 3 is a longitudinal central sectional view of my improved watercompartment, and its contained tar-discharge pipe and underlying air-flue.

A is the water-compartment. This is made ends, and it projectsinto the furnace through the: front. wall of the same, as shown by the dotted 1ines=a,the opposite. or front end being 7 exposed upon the frontof the. furnace or retort bench, as shown. An. induction tube or pi-pe,-B, opens intothe said compartment at its under-side on-itsfront end, as shown, and this pipeis connected by a coupling, b, with a supply-pipe,b. ,provided with a valve, I1

through which the supply of water passed into the compartment A..isconveyed and regulated. An eduction tube orfpipe, O, leads from: the said compartment-on its upper side,

yatitst front end,. as shown, and tot-his: eduction-pipe is coupled, by the coupler c, the steam-generating device hereafter to be described. D is the pipe through which the tar is conveyed from the hydraulic main to the dischargepipe 11, the said pipe D coming down to the front end of the said compartment A, and being there joined to the discharge -pipe at, which extends through the front end or head a of said compartment.

The discharge-pipe d extends longitudinally through the compartment A from the upper part of the front head a on a downward incline to, and opens through, the inner or opsaid tar will be prevented, by the jacket of water surrounding the said pipe, from coking or vaporizing in the saidpipe, and the tar will be discharged at the lower opening through the head a, into the furnace.

Directly underneath the pipe d, and extending longitudinally through the compartment A, in a horizontal line, is arranged the airfiue d opening through both heads of the said compartment, the opening in the head a being just beneath the opening of the discharge-pipe (Z. By this means the tar discharged through the pipe (1 is caught by the draft coming through the flue d at the moment that the said tar, in a highly liquefied state, makes its entrance into the furnace, and

'is, by the force ofthe draft, thrown in a spray, or atomized, into the furnace, and its complete and instantaneous combustion insured.

To the eduction pipe or tube 0, by the coupler 0, is connected the coil or section of pipe E, which is arranged in a convenient flue, e, of the furnace, while to the opposite end of said coil is attached the pipe 6 which may connect the coil with an exhaust for the re torts, and is provided with a safety-valve at 0 as shown, while a pipe, 6 leading from the pipe 6 is arranged to constitute a jet-pipe, to be introduced into the air-flue d as shown, the said jet-pipe being provided with a controlling-valve, 6. By means of this arrangement of parts the water passed into and heated in the compartment A, and passed out through the pipe 0, is conveyed into the coil E, and is there made into steam, either wet or dry, as

may be desired, and obtained by increasing or decreasing the supply of water admitted to the compartment A through the pipe B;

and said steam, thus produced, may be utilized to operate the jet-pipe 6 or, by being passed through the pipe 0 to operate an exhaust for the retorts. The employment of a detached or additional steam-generator to operate the jet-pipe, or to operate a blower for saic jet or the exhaust, is thus entirely obviate I am aware that tar-burners have been heretofore constructed with a discharge-pipe, into which opens an air-flue, or a steam or air jet, or both, at the outer end of said discharge- :pipe, and that the tar has, by this means,

been thrown in a spray through the said discharge-pipe. 'It is not myintention to claim herein broadly the atomization and discharge ing the water induction and eduction tubes B and C, respectively, and traversed longitudinally by the tar-discharge pipe d and the airflue d when said pipe d has a downward incline from the head a to the head a ,and the air-flue d opens into the furnace immediately under the opening of the pipe 01, whereby, at the moment the tar, in a highly liquefied state, makes its entrance into the furnace, it is caught by-the draftthrough the flue (Z and is thrown, in a spray, into the furnace, as and for the purpose specified.

2. The combination, with the furnaceofa gas-retort, of the water-compartmentlA, having its induction and eduction tubes B and G, and its longitudinal tar-discharge pipe 01, and underlying air-flue d of the coil E arranged in flue e, and provided with the-pipe e and jet-pipe c, all to operate as described, and for the purposes specified.

JOHN FINDLAY.

Witnesses:

G. A. SGHILLINGER, H. B. SEELY. 

